Hey guys, new here. I need help with a filter design for a pond. I have been looking stuff up online and still don't understand a few things. Should i be "pushing" water into a canister filter or "pulling/sucking" it through the filter. The pump I have to use is a Supreme MAG-DRIVE pump,700 GPH, and can be used submersible or in-line. Which is another question I have. should i submerge the pump in the pond or use it in-line. I don't care about looks, I just want the pump to be safe. Also can I have 2 canisters linked in "series". One for coarse filtration and the other for bio-logical media. I don't want them to be in the same canister for two reasons. One being the coarse media will need much more maintenance and cleaning than the bio. Also since this is for a 275 gallon pond a canister filter will have to be quite large. So if have two of them it wont have to be so darn tall. Thanks for reading and I would much appreciate any feed back or in-put.